Lubricating apparatus



P 1931. l. s. CARPENTER 1,821,828

LUBRICATING APPARATUS Filed June 6, 1930 2 Sheets-Sheet 1 fizzy LS1 Carper/1171;

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I. s. CARPENTER LUBRICATING- APPARATUS Filed June 6, 1930 [Ill 2 Sheets-Sheet .2

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Patented Sept. '1, 1931 IVAN s.

CARPEld'TER, OF DENVER, COLORADO, ASSIGNOR TO- GARDNER-DENVER COMPANY, 01? DENVER, COLORADO, A- CORPORATION OF DELAXVARE LUBRICATING APPARATUS Application filed June 6, 1930. Serial No. 459,545.

In apparatuses such as drill sharpener-s, considerable difliculty is experienced in eiiectively lubricating the same. The object of the present invention is to provide a means 5 by which the motive fluid that is distributed to the various parts, is caused'to act as-a carrier for the lubricant, so that the movingparts to which the motive fluid is supplied, will thereby be also supplied with lubricant. I

' In the accompanying drawings, there is disclosed an embodiment of the invention applied to a drill sharpener. In said drawings: v Figure l is a view partly in elevation and partly in section of such sharpener, and :howing the lubricating apparatus in elevaion. Figure 2 is a vertical sectional view diagrammatic in its character through the same.

Figure 3 is a detail vertical sectional view on an enlarged scale of the lubricator.

, In the embodiment disclosed, a chambered base '4 is provided, the chamber 5 thereof 25 forming a reservoir for motive fluid and for lubricant. Supported on this base are cylinders 6 and 7 ,in which are pistons 8 and 9. These pistons are connected by piston rods 10 with a movable holding die 11 that overlies a stationary coacting holding die 12. Obviously when motive fluid is' supplied to the upper faces of the pistons 8 and 9, the die 11 will be moved downwardly toward the die 12, and the work, as for example, a drill steel, placed between the dies,- will be clamped thereby. As shown in Figure 1, a pneumatic dolly hammer 13 is mounted at oneside of the dies and is adapted to operate in. a well-known manner on the work held by the dies 11 and 12. For the purpose of supplying fluid to the pistons 8 and 9, a passageway 14-. leads from the upper portion of the chamber 5 to a valve cham er 15 mounted on one side of the upper cylinder 7.- Leading from this valvechamber 15 are two passageways 16 and 17 that open respectively into the cylinders 6 and 7. Communication between the supply passageway 14 and the passageways explains the 16 and 17 is controlled by a reciprocatory spool valve 18 operating in the valve cham- ,ber 15 and actuated by a hand le from the valve chamber conduit 20 leading 15, supplies motive fluid to the dol 13, as shown in Figure 2 and is by a valve 21 whose stem 22 is a the lever 19. I

ver 19. A

ly hammer controlled ctuated by It is believed that the above sufficiently structure for the purposes of the present invention. A more detailed exposition of the same will be found in the application for patent of L. E. Croft, Ser. No., 1

311,227, filed October 8, 1928a Leading to the chamber or" reservoir 5 at a point well above its bottom is a motive fluid supply pipe thereinto ahead 23. This pipe has coupled 24 adjacent tothe base 4,

said head having in its upper portion a passageway 25 through which the motive fluid flows on its way to the reservoi r 5. This Head furthermore has in its lower portion a socket 26 in communication with the lower portion 'ofthe reservoir 5 by acoupling 27 The head furthermore has a 28 intersecting the passageway vertical bore and socket 26, the lower portion ofthe bore being enlarged to receive a threaded plug 29 provided with a pocket 30 in its upper end.

This enlargement stitutes a well 31 may freely flow reservoir 5. A vertical stem 32 bly mounted in the bore 28 and with the pocket 30 con-- into which the lubricant from the bottom of the is rotatahas a vertical passageway 33 extending upwardly y from its lower stem in the passageway 25. The

end to atransverse port 34 opening through the opposite sides of the upper end of the stem has a bearlng against an adjustable holding plug top of the head 24 and end of the stem.

35 threaded in the bearing against the The stem is supported by a coiled spring 36 surrounding its lower end which is reduced, as shown at 37, entering the plug 29.- It reference t o Figure the passageway 33 is cant that enters the well.

I'Vith this structure. the motive ing through the supply pipe 23 the spring cup 30' and bearing against the will be noted particularly by 3 that the lower end of freely open to the lubrifluid passand therefore through the passageway 25 of the head 24 will cause the oil that is in the well 30 to rise through the passageway 33 and enter the fluid stream through the port 34, being thereby atomized and flowing with the mtive fluid (usually air) into the reservoir 5. Here the excess lubricant will be separated from the fluid and drop back into the body of lubricant in the lower portion of the chamber 5, but the motivefluid will be sufliciently saturated so that it will flow through the supply conduit 14 to the valve 18 and lubricate the latter, and thence to the various instrumentalities of the apparatus. There is of course always a body of oil in the reservoir that will supply the well 31.

As a consequence the moving parts of the apparatus will be better lubricated and yet excessive or unnecessary amounts of oil are not employed.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art without further description and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to Without departing from the spirit or sacrificing any of the advantages of the invention.

What I claim is:

1'. In a metal working machine, the combination with a fluid operated work holder,

a motive fluidand lubricant reservoir, a conduit for conveylng motive fluid from the reservoir to the work holder to operate it and a valve mechanism'for controlling the con I the reservoir, 4.0

duit, of means'for supplying motive fluid to and means for delivering lubricant from the motive fluid and lubricant reservoir into the motive fluid supply means.

2. In a metal working machine, the combination with a fluid operated work holder, a motive fluid and lubricant reservoir, a. conduit for conveying motive fluid from the reservoir to the work holder to operate it and a valve mechanism for controlling the conduit, of means for-supplying motive fluid to the reservoir, and a lubricant atomizer having an intake in communication with the reservoir and an outlet delivering into the motive fluid supply means.

3. In a metal working. machine, the combination with achamber for the reception of lubricant and fluid under pressure, a conduit for supplying fluid under pressure to chamber, a lubricant holding well supplied by the chamber, and a stem having a lubricant passageway with an inlet in the well, said stem extending into the conduit and the passageway having an outlet in said conduit.

5. In a metalworking machine, the combination with a work holding ap aratus including a chambered base, said ase constituting a reservoir for motive fluid and for lubricant, a conduit for directing the motive fluid from the chamber to the work holding mechanism to operate the latter, valve mechanism controlling the conduit, a motive fluid supply conduit leading to the chamber, a lubricant well receiving lubricant from the chamber, and an atomizer stem having a passageway provided with an inlet end in the well and an outlet orifice in the motive fluid supply conduit.

In testimony whereof, I afiix my signature.

' IVAN S. CARPENTER.

the chamber, an atomizer having an intake gas 

